Convert crt certificate

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My domain is:

I ran this command:

It produced this output:

My web server is (include version):

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know):

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):

I need a help
Can I change(convert) the certificate created by certbot to X25519?
using openssl and I can’t find command line

Hi @DV_Rosando

a certificate is read only.

So that’s not possible.

1 Like

For now, no public CA will issue Ed25519 certificates.

You can find the supported key types in Let’s Encrypt’s CPS (

RSA with modulus between 2048 and 4096, inclusive; or namedCurve P-256; or namedCurve P-384

thank you comment.
Does the public key mean is free users?

Is there any other way? Need to generate a new certificate?

You can generate your own certificates, but those won’t be accepted as a valid certificate by browsers.

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